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Dana White talking about PPV buys:
"Since the pandemic started, there hasn't been a bad pay-per-view, they've all been overperforming"
UFC 250 in June, which was headlined by Amanda Nunes following two manlet bouts, did 85,000 buys. That tied UFC 224, also headlined by Nunes, as the worst-performing PPV in 16 years. You have to go back all the way to UFC 249 in 2004 to find a card that did worse.
The numbers for UFC 255 in November and UFC 256 in December haven't been released yet. But given that they were both main-evented by manlets and one had WMMA as a co-main, it is safe to say both did less than 200,000 buys.
During fight week for UFC 254: Khabib vs. Gaethje, Dana said it was "trending off the charts" and could potentially be the UFC's highest selling PPV of all-time. So the fact that it only did 675,000 buys is a colossal underperformance.